Heart valve pivot arrangement



FIG. 1 is a top, front, side perspective view of a heart valve pivotarrangement, having flat monoleaflet configuration, in closed position;

FIG. 2 is a bottom, rear, side perspective view thereof;

FIG. 3 is a cross-sectional view thereof, taken along line 3--3 of FIG.1;

FIG. 4 is a cross-sectional view of a second embodiment, having a curvedmonoleaflet configuration;

FIG. 5 is a cross-sectional view, of a third embodiment, similar to thatshown in FIG. 3, having different guide projections in the wallstructure;

FIG. 6 is a cross-sectional view, of a fourth embodiment, similar tothat shown in FIG. 4, having different guide projections in the wallstructure;

FIG. 7 is a top, front, side perspective view of FIG. 1 in openposition;

FIG. 8 is a bottom, rear, side perspective view thereof;

FIG. 9 is a cross-sectional view thereof, taken along line 9--9 of FIG.7;

FIG. 10 is a cross-sectional view, of the second embodiment shown inFIG. 4, in open position;

FIG. 11 is a cross-sectional view, of the third embodiment shown in FIG.5, in open position;

FIG. 12 is a cross-sectional view, of the fourth embodiment shown inFIG. 6, in open position;

FIG. 13 is a side elevational view of the embodiments shown in FIGS.1-6, all other sides being a mirror image thereof;

FIG. 14 is a top plan view of the embodiments of FIGS. 1-6, referencebeing made to FIG. 1;

FIG. 15 is a bottom plan view of the embodiments of FIGS. 1-6, referencebeing made to FIG. 2;

FIG. 16 is a side elevational view of FIGS. 7-9 and 11, with the sideelevational views of FIGS. 10 and 12 being very similar FIG. 16, withthe only difference residing in the appearance of a curved leaflet asseen in FIG. 10;

FIG. 17 is a front elevational view of FIGS. 7-9 and 11 looking from theleft of FIG. 16;

FIG. 18 is a top plan view thereof;

FIG. 19 is a rear elevational view thereof, looking from the right ofFIG. 16; and,

FIG. 20 is a bottom plan view thereof.

The ornamental design for heart valve pivot arrangement, as shown and described. 